material with which something is impregnated; the impregnation, whatever it was, had turned the rock blue'

the process of totally saturating something with a substance; the impregnation of wood with preservative; the saturation of cotton with ether

[ Syn: saturation ]

creation by the physical union of male and female gametes; of sperm and ova in an animal or pollen and ovule in a plant

[ Syn: fertilization , fertilisation , fecundation ]